Backpack



FIG. 1 is a Perspective view of a backpack showing my new design;

FIG. 2 is a Front view of the backpack as shown in FIG. 1;

FIG. 3 is a Back view of the backpack as shown in FIG. 1;

FIG. 4 is a Top view of the backpack as shown in FIG. 1;

FIG. 5 is a Bottom view of the backpack as shown in FIG. 1;

FIG. 6 is a Right-side view of the backpack as shown in FIG. 1; and,

FIG. 7 is a Left-side view of the backpack as shown in FIG. 1.

The broken lines surrounding unshaded areas depict portions of the article and form no part of the claim. The broken lines shown on claimed surfaces depict stitching and form no part of the claim. 

CLAIM I claim the ornamental design for a backpack, as shown and described. 